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Shoe Size Converter

Converts shoe sizes between US, UK, EU, Japan and centimetres for men, women and children.

Converters Nothing uploaded No sign-up Free, unlimited
Converters tool
Enter your figures and press Calculate.
In short Shoe Size Converter is a free online tool on inputtesthub.com that converts shoe sizes between US, UK, EU, Japan and centimetres for men, women and children. It needs no account, no download and no payment, and there is no daily usage limit. Everything is processed inside your own browser, so the data you paste is never uploaded to a server.

How to use the Shoe Size Converter

  1. Enter your figures in the input fields.
  2. The result updates as you type, together with the full working.
  3. Check the breakdown table to see exactly how the number was reached.

About the Shoe Size Converter

The Shoe Size Converter converts shoe sizes between US, UK, EU, Japan and centimetres for men, women and children. It runs as plain JavaScript inside the page, which means there is no upload step, no queue and no size limit imposed by a server — the only limit is your own device.

What people use it for

  • Ordering shoes from an overseas shop.
  • Reading a size chart that only lists one system.
  • Buying a gift when you only know one measurement.
Shoe sizing is not standardised between brands. These charts follow the common conversion tables, but the same nominal size can differ by half a size or more between manufacturers. Where a foot length in centimetres is available, use that.

Frequently asked questions

Is the Shoe Size Converter free?
Free, unlimited, and no email address required. You can use it a hundred times a day and nothing changes.
Is what I paste into the Shoe Size Converter stored?
No. The Shoe Size Converter runs entirely in your browser using JavaScript. Your input never reaches inputtesthub.com or any third party — open your browser's Network tab while you use it and you will see no request go out.
Who is the Shoe Size Converter for?
The jobs it is built for: ordering shoes from an overseas shop. Reading a size chart that only lists one system. Buying a gift when you only know one measurement. It is built for exactly those cases rather than being a general-purpose tool with this bolted on.
Is there anything to watch out for?
Shoe sizing is not standardised between brands. These charts follow the common conversion tables, but the same nominal size can differ by half a size or more between manufacturers. Where a foot length in centimetres is available, use that.
Can I rely on this for exact work?
The calculation runs in double precision and the result is shown to ten significant figures, so converting a value and converting it back returns the original. What is displayed is rounded for readability; what is copied is not.

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